A trucking company is interested in understanding what is going on with the time the drivers are on the road. Travel time is the dependent variable. It seems that travel time would be influenced by miles traveled or the number of stops, the independent variable(s). Given the data below, if you had to pick one variable or the other, which is a better predictor of the time? Why?
Miles Deliveries Time
100 5 9.3
50 3 4.8
100 4 8.9
100 2 6.5
5 2 4.2
80 2 6.2
75 3 7.4
65 4 6
90 3 7.6
90 2 6.1